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Designing waste rock barriers by advanced numerical modelling
Centre for Geotechnical Science and Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia.ORCID iD: 0000-0001-7351-7447
Umeå University, Faculty of Science and Technology, Department of Physics. (Digital fysik)ORCID iD: 0000-0002-0787-4988
Centre for Geotechnical Science and Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia.ORCID iD: 0000-0002-7395-0539
Centre for Geotechnical Science and Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia.ORCID iD: 0000-0001-5115-3216
2019 (English)In: Journal of Rock Mechanics and Geotechnical Engineering, ISSN 1674-7755, Vol. 11, no 3, p. 659-675Article in journal (Refereed) Published
Abstract [en]

Design of waste rock barriers forming safety berms for haul trucks requires knowledge of complex interactions which cannot readily be tested by physical means. An advanced numerical model based on non-smooth multi-domain mechanics is presented together with model calibration using limited full-scaleexperimental data. Waste rock is represented by spherical particles with rolling resistance, and an ultra-class haul truck is represented by a rigid multibody system interconnected with mechanical joints. The model components are first calibrated and then the calibrated model is used for simulating various collision scenarios with different approach conditions and safety berm geometries. Numerical predictions indicate that the width of the berm is most critical for efficiently stopping a runaway truck. The model can also predict if a certain berm geometry is capable of stopping a runaway truck. Results are summarised in a series of diagrams intended for use as design guidelines by practitioners and engineers.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 11, no 3, p. 659-675
Keywords [en]
Discrete element method (DEM), Multibody dynamics (MBD), Non-smooth multi-domain dynamics, Granular materials, Ultra-class haul truck, Safety berm, Surface mining
National Category
Geotechnical Engineering
Research subject
Physics; Geophysics Specialized In Solid Earth
Identifiers
URN: urn:nbn:se:umu:diva-156049DOI: 10.1016/j.jrmge.2018.11.005ISI: 000470656700017OAI: oai:DiVA.org:umu-156049DiVA, id: diva2:1285211
Available from: 2019-02-03 Created: 2019-02-03 Last updated: 2019-09-05Bibliographically approved

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Servin, Martin

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